in oxidation how the subs. loses electrons explain and how it gains electrons in reduction . ??

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Solution

$A d d i t i o n o f o x y g e n i s o x i d a t i o n a n d r e m o v a l o f o x y g e n i s r e d u c t i o n . T h i s i s a c c o r d i n g t o t h e o l d d e f i n i t i o n . F o r e x ., F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2} S e e h e r e F e i s r e d u c e d f r o m F e_{2} O_{3} t o F e (r e m o v a l o f o x y g e n) C O i s o x i d i s e d t o c a r b o n d i o x i d e (a d d i t i o n o f o x y g e n) A s p e r t h e m o d e r n t h e o r y, y o u c a n f i n d t h e o x i d a t i o n a n d r e d u c t i o n b y e l e c t r o n c h a n g e s w h i c h i s e a s i e r . I n t h e l e f t s i d e t h e o x i d a t i o n s t a t e o f F e i s F e_{2} O_{3} 2 x + 3 (- 2) = 0 2 x = 6 x = + 3 I n r i g h t s i d e, t h e o x i d a t i o n s t a t e o f F e i s z e r o . T h u s d e c r e a s e i n o x i d a t i o n s t a t e o c c u r f r o m + 3 t o z e r o F e^{+ 3} + 3 e^{-} \to F e T h u s r e d u c t i o n o c c u r . (C o m p a r i n g w i t h t h e p r e v i o u s t h e o r y a l s o i t s r e d u c t i o n) I n t h e l e f t s i d e t h e o x i d a t i o n s t a t e o f C a r b o n i s C O x + (- 2) = 0 x = + 2 I n r i g h t s i d e, t h e o x i d a t i o n s t a t e o f C a r b o n i s C O_{2} x + 2 (- 2) = 0 x = + 4 T h u s i n c r e a s e i n o x i d a t i o n s t a t e o c c u r f r o m + 2 t o + 4 C O + O^{2 -} \to C O_{2} + 2 e^{-} T h u s o x i d a t i o n o c c u r . (C o m p a r i n g w i t h t h e p r e v i o u s t h e o r y a l s o i t s o x i d a t i o n) T h u s a c c o r d i n g t o m o d e r n t h e o r y l o s e o f e l e c t r o n i s o x i d a t i o n a n d g a i n o f e l e c t r o n i s r e d u c t i o n .$

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Similar questions

What do you understand by redox reactions ? Explain oxidation and reduction in terms of loss or gain of electrons.

Choose the correct optiom

When a metal atom becomes an ion

1)it loses electrons and it is oxidised

2)it gains electrons and it's reduced

3)it loses electrons and it's reduced

4)it gains electrons and it's oxidised

Choose the correct answer from the choices A, B, C and D :

(i) The property which is characteristic of an electrovalent compound is that :

A. it is easily vaporized,

B. it has a high melting point,

C. it is a weak electrolyte,

D. it often exists as a liquid.

(ii) When a metal atom becomes an ion :

A. it loses electrons and is oxidized,

B. it gains electrons and is reduced,

C. it gains electrons and is oxidized,

D. it loses electrons and is reduced.

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